add editorconfig block for xml (2 spaces indented)
add editorconfig block for xml (2 spaces indented)

sstafford/gerrit-rest-java-client,uwolfer/gerrit-rest-java-client,uwolfer/gerrit-rest-java-client,vogellacompany/gerrit-rest-java-client,vogellacompany/gerrit-rest-java-client,sstafford/gerrit-rest-java-client